Mincon MR132 RC Hammer (4 1/2″ Remet)

The MR range of RC hammers is designed to perform at the top end of the performance scale compared to other tools on the market. With extensive testing over an 18 months period the MR range of tools offers some very significant benefits over it’s predecessor, the MX range of RC hammers.
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Performance improvements show up to 20% increase in production in both grade control and exploration applications vs. the Mincon MX range. As with all Mincon hammers the tools performed extremely well in deep hole drilling in dry applications and where there is a lot of water in the bore hole. With a variable length available on the chuck sleeve the hammer can be easily set up for either dry or wet hole drilling. Set to become the standard by which RC hammers will be measured, the Mincon MR range of tools get the job done.

Key Features and Benefits

  • Patented mounting system for fixed internal components.
  • An extremely sturdy shank with a short length allows for greater transfer of energy between the piston and bit.
  • Variable chuck sleeve lengths for varying drilling conditions.
  • Single piece sample tube assembly.
  • Specially heat treated sample tubes offer superior wear resistance vs. our competitors.
  • Variable sample tube bore sizes allows the contractor greater flexibility in setting up his tool.
  • Hardened wear sleeve for optimum wear resistance even in the most abrasive conditions.
  • Multi-start threads on backhead and chuck ensure easy coupling/uncoupling of hammer.
  • Metal sprayed chuck sleeve and wear sleeve options for greater wear resistance on outside circulation.
  • All critical internal components are heat treated under strict control to maximize tool longevity.
  • Ease of service with no special assembly or disassembly tools required.

For more information:

+40 314 253 800
info@romned.ro

Ron van Dam
CEO

Specifications Metric Imperial
Hammer Outside Diameter 132mm 5.2″
Hammer Length (Less Drill Bit) 1165mm 45.9″
Backhead Spanner Flat Size 94mm 4″
Drill Bit Shank Type MR132
Backhead Thread 4 1/2″ Remet
Drill Bit Size Range 137mm – 146mm 5.4″ – 5.75″
Hammer Weight (Less Bit) 77 Kgs 170 Lbs
Maximum Drill Bit Weight 18 Kgs 39.7 Lbs
Piston Weight 19 Kgs 41.9 Lb
Make up Torque 5288-7050 NM 3900-5200 FT Lbs
Backhead Stand Off 0.75mm 0.030″
Recommended Minimum Air Package 25.5m3/min @ 24.1Bar 900cfm @ 350psi
Item Part No Description
MR132AL01 MR132 Hammer 4 1/2″ Remet – Low Air
1 1300-0850 Internal Circlip
2 BS 228 O Ring x 2
3 MX5456AT01 Adaptor Tube 4 ½” Remet Pin
4 BS 226 O Ring x 2
5 BS 040 O Ring
6 MX5456SC01 Airscreen
7 MR132BH01 Back Head 4 ½” Remet
8 BS 244 O Ring
9 8406-0200-N8 Check Valve Seal
10 MX5456CV01 Check Valve Plunger
11 MX5456SP01 Check Valve Spring
12 MR132SS01 Spacer
13 MR132LR01 Lock Ring
14 MR132ST01 Sample tube – Large Bore
MR132ST03 Sample Tube – Small Bore
15 BS230 O Ring
16 MR132DR02 Sample Tube Mount – Low Air
17 BS237 O Ring
18 BS042 O Ring
19 MX5456SR01 Seating Ring
20 MR132IC01 Inner Cylinder
21 MR132PN01 Piston
22 MR132WS01 Wear Sleeve
23 MX5456PR01 Piston Retain Ring
24 MR132BB01 Aligner Bearing Bush
25 N7-102-4 O Ring x 2
26 BS 241 O Ring
27 MR132BR01 Bit Ring
28 BS 152 O Ring
29 MR132CSxxx Chuck Sleeve
30 MR132CK01 Chuck
MR132OKIT O Ring Kit
MR132MK01 Make Up Service Kit

 Air Pressures are given for compressors operating at seal level at 20° C (68º F). Corrections to actual compressor volume should be made to account for temperature, altitude and relative humidity.

DTH hammers must receive a constant supply of proper rock drill oil to protect the internal components and to provide a good air seal between the hammer’s running surfaces for efficient drilling. Mincon recommends the use of Mincon Envirosafe® Rock Drill Oil (RDO) to maintain optimal performance and extend the life of the internal components. The correct consumption of oil is dependent upon the air volume and conditions. Please refer to the lubrication graph below for recommendations. When drilling in wet conditions the normal amount should be doubled. There should be visual evidence of oil around the drill bit shank and within the tube joints when changing tubes.

If using petroleum based rock drill oils, the recommended grade of oil is dependent on the ambient temperature and the operating pressure. As a rule of thumb, ISO320 grade rock drill oil should be used whenever possible as the hammer is a high frequency tool, however, where the pump cannot pump the oil in colder conditions, a lower grade of oil can be used as per the graph below.

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Diameter Face Type Part Number Description No. x Button Dia (inch) Sample holes Weight Approx.
mm inch Outer Face Centre Kgs. Lbs.
137 5 3/8 Concave 5132137C1 MR132 5 3/8 CC BIT 8 * 5/8 4 * 9/16 4 * 9/16 2 17 37.5
137 5 3/8 Drop Centre 5132137D1 MR132 5 3/8 DC BIT 8 * 5/8 4 * 5/8 4 * 1/2 2 17 37.5
137 5 3/8 Hard Formation 5132137H1 MR132 5 3/8 HF BIT 8 * 5/8 6 * 5/8 4 * 9/16 2 17 37.5
140 5 1/2 Concave 5132140C1 MR132 5 1/2 CC BIT 8 * 5/8 4 * 5/8 4 * 9/16 2 17 37.5
140 5 1/2 Drop Centre 5132140D2 MR132 5 1/2 DEEP DC BIT 8 * 5/8 4 * 5/8 3 * 1/2 2 17 37.5
140 5 1/2 Hard Formation 5132140H1 MR132 5 1/2 HF BIT 8 * 5/8 6 * 5/8 4 * 1/2 2 17 37.5
143 5 5/8 Drop Centre 5132143D1 MR132 5 5/8 DC BIT 8 * 5/8 4 * 5/8 4 * 1/2 2 17 37.5
143 5 5/8 Hard Formation 5132143H1 MR132 5 5/8 HF BIT 8 * 5/8 6 * 5/8 4 * 1/2 2 17 37.5
146 5 3/4 Concave 5132146C1 MR132 5 3/4 CC BIT 8 * 5/8 4 * 5/8 4 * 9/16 2 17 37.5
146 5 3/4 Drop Centre 5132146D1 MR132 5 3/4 DC BIT 8 * 5/8 4 * 5/8 4 * 1/2 2 17 37.5
146 5 3/4 Hard Formation 5132146H1 MR132 5 3/4 HF BIT 8 * 5/8 6 * 5/8 4 * 1/2 2 17 37.5
152 6 Drop Centre 5132152C1 MR132 6″ COLLARING BIT 8 * 5/8 6 * 9/16 4 * 1/2 2 18 39.7
165 6 1/2 Drop Centre 5132165C1 MR132 6 1/2 COLLARING BIT 8 * 5/8 8 * 5/8 4 * 9/16 2 19 41.9
190 7 1/2 Drop Centre 5132190C1 MR132 7 1/2 COLLARING BIT 8 * 5/8 12 * 5/8 4 * 9/16 2 21 46.3